Signs and Symptoms of Pregnancy in the First 2 Weeks

Rather than waiting for weeks to find out whether you are pregnant, learn about some of the early signs of pregnancy. As early as the first two weeks after conception, your body may produce symptoms associated with pregnancy. Knowing what to look for and expect may help you realize your pregnancy earlier, even before taking a pregnancy test.

Long before you begin to show, your body gives you signs of pregnancy.
Long before you begin to show, your body gives you signs of pregnancy. (moodboard/moodboard/Getty Images)
First Two Weeks Pre-conception

Pregnancy is calculated from the first day of the woman's last period, so the first two weeks of pregnancy are actually the preconception weeks. During this time, the woman is probably not pregnant yet. During the 10 to 14 days following the first day of the woman's menstrual cycle, she will release an egg that goes down her fallopian tube. The egg then waits to be fertilized by the father's sperm. On average, women have a 20 percent chance of becoming pregnant during each cycle. Some women experience no symptoms at all, however, so if you don't experience any symptoms in this time period, it doesn't necessarily mean you're not pregnant.

Pregnancy is calculated from the first day of the woman's last period, so the first two weeks of pregnancy are actually the preconception weeks.
Pregnancy is calculated from the first day of the woman's last period, so the first two weeks of pregnancy are actually the preconception weeks. (Comstock/Stockbyte/Getty Images)
First Two Weeks Post-conception

Once a sperm has fertilized the egg, the woman is pregnant. She will probably miss her next period. During the next two weeks, she may also begin to experience some or all of the following symptoms (remember that a lack of symptoms is normal, too): tiredness, nausea, breasts that become tender, a metallic taste in the mouth, the need to urinate more often, temperature that remains high after ovulation (normally it will fall), headaches, backaches, mood swings, slight bleeding or cramping (when the egg attaches to the uterine wall), constipation and disturbances during sleep. Most of these signs of early pregnancy will appear toward the end of the second week after conception, but occasionally a woman will notice them slightly earlier.

Women may experience tiredness or nausea.
Women may experience tiredness or nausea. (Hemera Technologies/Photos.com/Getty Images)
Baby's Development During First Two Weeks Post-conception

During the first few weeks, the gender of the baby is determined. The egg that has been fertilized is called a zygote, and it begins to divide. As its cells multiply, the zygote burrows into the uterine lining. The future baby is now called a blastocyst, which is a ball of cells. The inner area of cells will become the embryo, and the amniotic sac will form from a cavity in the blastocyst. The placenta will eventually form from the outer cell body.

During the first few weeks of pregnancy, the gender of the baby is determined.
During the first few weeks of pregnancy, the gender of the baby is determined. (Stockbyte/Stockbyte/Getty Images)
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